PEMANFAATAN BIJI ASAM JAWA ( TAMARINDUS INDICA ) SEBAGAI KOAGULAN ALTERNATIF DALAM PROSES PENGOLAHAN AIR SUNGAI

Tamarind seeds (Tamarindus indica) as waste are rarely used until now and needed to be developed further for river water which is more economical and biodegradable. The use of tamarind seeds as natural coagulant in river water treatment been done. Study on the effect of tamarind as a natural coagulant on water quality parameters which include: pH, turbidity and total suspended solid in river water by using the coagulation - flocculation method. The research variables are tamarind seed measure ( 500, 1000, 1500, 2000 and 2500 mg/l), particle diameter of tamarind seeds ( 20, 40, 60, 80 and 100 mesh). Result of the research explained that in the range of time the observation was done, the tamarind seed measure as an optimal coagulant being 1000 mg/l with particle diameter of tamarind seeds 100 mesh could removed 74,07% TSS and 51,79% turbidity. Keywords: Tamarind seeds, coagulation, flocculatio